Conservative group Judicial Watch and the State Department are tangling over a lawsuit pertaining to Hillary Clinton's use of a private email address and server, including sworn testimony from Clinton's aides.

According to Politico, the ongoing lawsuit brought on by Judicial Watch is in the fact-finding phase. Michael Bekesha, a lawyer for Judicial Watch, told Politico the group is seeking to have a crucial deadline extended to Friday.

Judicial Watch was originally supposed to respond to several State Department requests by the end of Tuesday regarding the line of questioning it gives three of Clinton's aides during her time as Secretary of State (2009-2013).

As part of the lawsuit, Judicial Watch wants to know whether Clinton's private email setup was done in order to hide from Freedom of Information Act (FOIA) requests.

Clinton's email saga has followed her on the campaign trail as she runs for the Democrat presidential nomination, but despite that she still leads the race for delegates ahead of this summer's convention.

In February, U.S. District Judge Emmet G. Sullivan ordered the State Department and Judicial Watch to come up with a plan for questioning witnesses in the FOIA lawsuit by April.

The FBI is also investigating the matter, and it was recently reported the Bureau could interview Clinton and her aides soon.

Clinton apologized for using the email setup last year and said she did not break any rules.

Conservative group Judicial Watch and the State Department are tangling over a lawsuit pertaining to Hillary Clinton's use of a private email address and server, including sworn testimony from Clinton's aides.